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Finding the Third Proportional to 2,555 and 5,281

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Solution

The third proportional to 2,555 and 5,281 is: 10,915.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,555 : 5,281 = 5,281 : x
  2. Step 2: Convert to fraction form
    2,555/5,281 = 5,281/x
  3. Step 3: Cross multiply
    2,555x = 5,281 × 5,281
  4. Step 4: Simplify right side
    2,555x = 27,888,961
  5. Step 5: Solve for x
    x = 27,888,961/2,555
  6. Step 6: Final answer
    x = 10,915.44

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.